"They're labels you stick over the address on a used envelope to make it shiny enough to use again. They come in two models, original angelic and London Underground issue (above). They're really nicely designed - the box acts as a dispenser which you can refill, and Blue Marmalade, the people who make them are so nice they'll even recycle the plastic stickerbacks for you."

The Tube one is illustrated with a stretch of the Northern line leading to Angel station, and carries the slogan: 'Another journey for every envelope'. Hopefully it's a better journey than an average one on the Misery Line! They're only £5.86 for a pack which contains 100 "To: Labels" and 100 "From: labels". The company's tip is to include a label pair within each envelope you send and pass on the idea to those you mail.

Blue Marmalade also make some very cool looking pendant lampshades. They're made from single sheet of recyclable material and when they light up reveal the Tube map illuminated in their folds.

The lamps which are £24.27 come in Classic styles (for high ceilinged rooms) & Intimo (for more intimate settings!). They can be used with energy saver bulbs and bulbs up to 100W.

Apparently the fold-out design means there's not much waste during production and the material is also recyclable. Based in Edinburgh, Blue Marmalade aim to be as green as possible, and say that harmful chemicals and manufacturing processes are removed from their designs.

Trent Jennings from the company said: "The Underground map represents British graphic design at its best; it has strong functionality but also great visual impact." I think it's a great idea for a lamp and I'm sure it will be gracing my lounge very soon.